LOINCActive

LOINC Code 19012-4: Discharge medication, Substitution instruction

19012-4 is a LOINC code used to identify Discharge medication, Substitution instruction in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Substitution instruction. It is commonly used with the system or sample type Medication.discharge.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Substitution instruction. It is commonly used with the system or sample type Medication.discharge.

When is it used?

  • Used in lab systems, EHRs, and clinical data exchange.
  • May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
  • Status: ACTIVE

What it does not mean

  • The code identifies the observation or test, not the actual result.

Key facts

  • Discharge medication, Substitution instruction
  • Substitution instruction
  • ATTACH; ATTACH.MEDS; Disch; Identity or presence; Med; MEDS; Nominal; Point in time; Random

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Discharge medication, Substitution instructionSubstitution instructionATTACH.MEDSPridPtMedication.dischargeNom

Frequently asked questions

Code details

Code19012-4
SystemLOINC
Display nameDischarge medication, Substitution instruction
DescriptionSubstitution instruction
ComponentSubstitution instruction
PropertyPrid
TimingPt
System (specimen)Medication.discharge
ScaleNom
ClassATTACH.MEDS
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0l
Last changed2.27

Part names

Substitution instructionPridPtMedication.dischargeNomPresence or IdentityPoint in time (spot)

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

LOINC Code 19012-4 | HealthAssure